Elements of pathological anatomy . 36 Traite dAnat. Path., t. i., p. fO. 282 BONRS. Fig. satisfactorily shown that in injuries of this description there is often consider-able wasting of the osseous tissue, in consequence merely of the obliteration ofthe nutritious artery by the callus. The atrophy is always eccentric, and isusually limited to one-third, one-half, or two-thirds ofthe affected bone, according to the seat of the originalinjury, or, more properly speaking, the quantity of thenew matter, and the extent of the vascular oblitera-tion. e. Finally, there is a species of senile at
Elements of pathological anatomy . 36 Traite dAnat. Path., t. i., p. fO. 282 BONRS. Fig. satisfactorily shown that in injuries of this description there is often consider-able wasting of the osseous tissue, in consequence merely of the obliteration ofthe nutritious artery by the callus. The atrophy is always eccentric, and isusually limited to one-third, one-half, or two-thirds ofthe affected bone, according to the seat of the originalinjury, or, more properly speaking, the quantity of thenew matter, and the extent of the vascular oblitera-tion. e. Finally, there is a species of senile atrophy. In oldage, the bones are rendered light, porous, and brittle ;the compact substance is reduced to a mere parchment-like shell, while the areolar texture is remarkably rare-fied or expanded ; the muscular prominences are dimi-nished in size ; the animal matter is partially absorbed ;and many of the vessels are obliterated. These changesare no where more conspicuous than in the neck of thefemur, which, in consequence, often breaks from themost trifling causes, and which, after this o
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